https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80654
--- Comment #8 from Frank Heckenbach <f.heckenb...@fh-soft.de> --- (In reply to Ville Voutilainen from comment #7) > That's not a bug. You need to make the copy constructor of s conditionally > deleted depending on whether T is copyconstructible. The copy constructor of std::vector doesn't seem to do that either (bits/stl_vector.h:326 in 7.3.0) unless I'm missing something. Is that what Daniel Krügler meant by "not SFINAE-friendly"? But he also wrote: "This is a QoI issue but not a violation of the requirements of the standard.", so I'm confused now.
